For Problems 5–16, please provide the following information.

(a) What is the level of signi­ficance? State the null and alternate hypotheses.

(b) Find the value of the chi-square statistic for the sample. Are all the expected frequencies greater than 5? What sampling distribution will you use? What are the degrees of freedom?

(c) Find or estimate the P-value of the sample test statistic.

(d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis that the population ­fits the speci­fied distribution of categories?

(e) Interpret your conclusion in the context of the application.

Snoop Incorporated is a fi­rm that does market surveys. The Rollum Sound Company hired Snoop to study the age distribution of people who stream music. To check the Snoop report, Rollum used a random sample of 519 customers and obtained the following data:

Using a 1% level of signi­ficance, test the claim that the distribution of customer ages in the Snoop report agrees with that of the sample report?

Transcribed Image Text:

Number of Customers from Sample Percent of Customers from Snoop Report 12% 29% Customer Age (years) Younger than 14 14-18 19-23 24-28 29-33 Older than 33 135 52 40 76 128 10% 14% 24%